WASHINGTON – Voters rejected one of 
President Barack Obama's  hand-picked candidates and forced another into a runoff, the latest sign  that his political capital is slipping beneath a wave of  anti-establishment anger.
Sen.  Arlen Specter became the fourth Democrat in seven months to lose a  high-profile race despite the president's active involvement, raising 
doubts about Obama's ability to help fellow  Democrats in this November's elections.
The first three candidates fell to Republicans. But  Specter's loss Tuesday to 
Rep.  Joe Sestak in Pennsylvania's Democratic senatorial primary cast  doubts on 
Obama's influence and popularity even  within his own party — and in a battleground state, no less.
Of course, it's possible that Democrats will fare  better than expected this fall. And there's only so much that any  president can do to help other candidates, especially in a  non-presidential election year.
Still, Obama's poor record thus far could hurt his  legislative agenda if Democratic lawmakers decide they need some  distance from him as they seek re-election in what is shaping up as a  pro-Republican year. Conversely, it might embolden Republican lawmakers  and candidates who oppose him.
"We're licking our chops at running against 
President Obama," said 
Rand Paul, 
tea party candidate and  victor in Kentucky's Republican primary for retiring GOP Sen. Jim  Bunning's seat. Paul told CNN on Wednesday he'd relish Obama's  campaigning on behalf of Democrat Jack Conway. Obama's agenda, Paul  said, is "so far to the left, he's not popular in Kentucky."
Obama's track record also raises the question of  whether he may be hurting candidates he supports by motivating his foes —  such as 
tea party  supporters — to vote. Though this month's AP-GfK Poll shows  Americans split about evenly over how he's handling his job, those  strongly disapproving outnumber people who strongly back him by 33  percent to 22 percent — not an enviable position for the president's  party.
Sestak's victory over Specter is especially  embarrassing, because he won by portraying himself and his supporters as  being more faithful to the 
Democratic Party than were Specter and his  backers — who included the president, Pennsylvania Gov. Ed Rendell and  other high-ranking party officials.
Creating another bruise for Obama and the Democratic  establishment Tuesday, 
Sen.  Blanche Lincoln was forced into a runoff in Arkansas' Democratic  senatorial primary. Obama supports her bid for a third term, but he is  not as closely associated with her campaign as he was with Specter's.
In previous months, Obama's endorsements and campaign  appearances weren't enough to save then-
Gov. Jon Corzine's re-election bid in New  Jersey, 
Creigh Deeds'  run for governor in Virginia or Martha Coakley's campaign in  Massachusetts to keep the late Edward M. Kennedy's Senate seat in  Democratic hands.
In fairness, Deeds was an underdog from the start,  and 
Corzine  brought many problems on himself. But the Coakley loss to Republican  Scott Brown was excruciating. She once was considered a shoo-in, and her  defeat restored the Republicans' ability to block Democratic bills with  Senate filibusters.
Unlike the Corzine, Deeds and Coakley races, Obama  made no late-campaign appearances for Specter. But it will be hard for  the president to distance himself from Specter's career-ending loss.
Obama campaigned for Specter last September in  Philadelphia, where he said, "I love 
Arlen Specter." Specter used the clip in  recent TV ads. Obama also e-mailed his supporters on Specter's behalf,  and he was the first person Specter thanked in his concession speech.
Vice  President Joe Biden, a Pennsylvania native, made several  appearances for Specter. Last week he told a Pittsburgh radio station,  "Arlen is the Democratic candidate."
Moreover, Obama was central to an all-important deal  with Specter that struck some Democratic voters as opportunistic at  best.
Specter had been a Republican senator for 28 years,  opposing countless Democratic bills and appointees even if he showed  more independence than most lawmakers. Thirteen months ago, however, he  concluded he could not win the GOP nomination for a sixth term against  conservative 
Pat Toomey.  He and top Democrats struck a deal.
Specter would become a Democrat, giving the party the  crucial 60th Senate vote it needed to overcome Republican filibusters,  which were frustrating the administration. In exchange, Obama, Biden,  Rendell and the entire Democratic hierarchy agreed to support Specter's  2010 re-election, including efforts to clear his 
way to the party's  nomination.
The losers in the deal were any longtime Democrats  who aspired to the U.S. Senate. They essentially were told to step aside  for an 80-year-old longtime Republican. Pennsylvania's Democratic  voters were asked to concur. 
Sestak, a former Navy 
vice  admiral first elected to the House in 2006, refused to go along.  He plugged away without help from the state or national party. A few  weeks ago he trailed Specter by about 20 percentage points in polls of 
likely Democratic voters. 
But Sestak caught fire in the closing days, partly through a TV ad  showing Specter campaigning enthusiastically with then-
President George W. Bush,  who remains deeply unpopular with many Democratic primary voters. 
In the past few weeks, the 
White House has played down Obama's role in  the Tuesday primaries, and he spent 
Election Day in 
Ohio talking about the economy. 
"At some point, you feel like we've done what we can do," senior 
White House adviser David Axelrod told The Associated  Press in an interview. "We do have other stuff going on," he said. 
Matt Bennett, a 
Democratic  strategist and vice president of the group Third Way, said he  doubts that Democratic lawmakers will panic over Obama's inability to  help Specter to a victory. 
"Presidents have coattails when their names are on the ballot," Bennett  said, and that can't happen for Obama until 2012.
http://news.yahoo.com/s/ap/20100519/ap_on_el_se/us_obama_no_coattails